dieterle



(ModL) H. E. DIETERLE.

SEWING MACHINE. I No. 353,542. Patented Nov. 30, 1886.

3 Sheets-Sheet I.

N. PETERS, Phoha-Limugmpher, Washmgtan. D. c.

(ModeL) 3 Sheets-Sheet 2. H. E. DIBTERLE.

- SEWING MACHINE. No. 353.542. Patented NOY. 30, 1886.

(ModeL) 3 Sheets-Sheet 3.

H. E. DIETERLE.

SEWING MAOHINE.

Patented Nov; 30, 18 86.

EJ'NTTE STATES HENRY E. DIETERLE,

PATENT OFFICE.

OF CHICAGO, ILLINOIS, ASSIGNOR TO BARNABAS ELDREDGE, OF SAME PLACE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 353,542, dated November 30, 1886.

Application filed January 5, 1885. Serial No. 152,092.

To all whom it may concern:

Be it known that LHENRY E. DIETERLE, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvementsin Sewing-Machines, which are fully set forth in the following specification, reference beinghad to the accompanying drawings, in which Figure 1 is a side elevation of a sewingmachine embodying my invention, parts being broken away to show the construction; Fig. 2, a bottom plan view of the same; Fig. 3, a sectional view of the feed-lever fulcrum, taken on the line x of Fig. 2; Fig. 4, a sectional view taken on the line y y of Fig. 1. Fig. 5 is an interior view of the casing which guides theneedle-bar and presser; Fig. 6, an end view of the bracket-arm, with the casing shown in Fig. 5 removed; Fig. 7, a sectional view on the line .2 z of Fig. 5. Figs. 8 and 9 are detail views of the cams on the main shaft which operate the feed and shuttle mechanism. Fig. 10 is an end view of the bed-plate, showing the feed-bar; and Fig. 11, a detail view of the outer end of the feed-bar.

Like letters refer to like parts in all the figurcs of the drawings.

My invention relates to sewing-machines,

being partially in the nature of an improvement upon Patent No. 263,325, granted to me August 29, 1882.

It also consists in certain improvements in the construction and arrangement of the various parts of the machine.

I will now proceed to describe a machine embodying my invention in one form in a practical manner, and will then specifically point out in the claims the novel features which I desire to protect by Letters Patent.

In the drawings, Aindicates the clothplate or bed-plate of the machine, and B the bracket arm or standard, to the outer end of which is attached the usual head-plate, b, to which the head-casing G is attached, which carries and guides the needle-bar and its operating mechanism.

D indicates the main or driving shaft, which is mounted in the bracket-arm B in the usual manner, and has secured thereon an eccentric,

(ModeL) E, embraced by a yoke, e, on the upper end of the lever E, mounted on suitable pivots, e, and having its lower end arranged between the forks e" of the shuttle-lever E, which is pivoted at e to the under side of the bed-plate.

On the shaft B, near the eccentric E, is arranged a cam, F,shaped substantially as shown in Fig. 9 of the drawings. This cam is embraced by a yoke, f, on the upper end of the feed-lever F.

In my patent hereinbefore mentioned the construction is such as to necessitate the use of two cams or ecoentricsthe one to give a vibratory motion to the feed-lever and the other to impart a reciprocating motion thereto. In the present instance I accomplish both of these results by a single cam by giving to the yoke f a square form, as shown in Fig. 4 of the drawings, so that the cam F will impart to the feedlever F the several successive motions which are imparted to it in my former patent. By this means I dispense with the extra cam and the extra yoke embracing the same, thereby not only reducing the cost of manufacture and simplifying the machine, but also reducing the frictional resistance to the operation of the machine. The yokefis shown as provided with the same means for taking up Wear and tightening it upon the cam as are shown applied to the yoke in my former patent.

The feed-lever F is embraced by a pivoted guide, F through which it reciprocates, and by means of which a vibratory motion is imparted to it, the said guide being mounted in a block, f,which may be clamped at any portion of the slot f by means of the clamp-screw F, as in my patent hereinbefore mentioned. The lower end of the feed-lever engages with one end of the vibrating lever G,which operates the feed-bar, and in order to make the connection between these two levers adj ustable I form the feed-lever F in two parts, the lower part, F", beingprovided witha suitable collar to embrace the end of the lever G, and its other end being formed into a split sleeve,

3 which may be clamped upon the lever F" mit the four-way motion of the feed-lever F to the feed-bar it is necessary to mount the vibrating lever G upon a universal fulcrum. In my former patent, hereinbefore referred to, this is accomplished by means of two pivots arranged at right angles to each other, the one supporting the'block to which thelever is pivoted by .the other; but it has been found in practice that the wear on these pivots is such,

owing to the nature of the movements of the lever G, that they soon become loose and allow such play of the parts as to cause a great deal of noise and unnecessary wear. In or; der to provide'a suitable universal bearing or fulcrum for the lever G, which will obviate these disadvantages, I mount the lever on the under side of the cloth-plate by means of a balland-socket joint, consisting of a suitable spherical enlargement, G, formed on the lever and surrounded by a housing or box, 9, attached to the-under side of the bed-plate, the said housing being provided with a trans verse aperture of substantially the size of the enlargement G; and in order to prevent any longitudinal movement of the lever and hold it in place I insert through a threaded aperture in the housing 9 a screw-plug, g, the inner end of which is provided with a concavity which will fit against the spherical enlargement G, as shown in Fig. 3, and prevent the same from moving in any manner, except with a motion of rotation upon its center. The screw-plug 9 maybe readily loosened to allow the removal of the lever G, and may be tightened up slightly at any time to take up any 'wear that may occur, and when in position is held against accidental displacement by means of a jam-nut, g", which screws upon its projecting portion and bears against the surface of the housing g.

The outer end of the vibrating lever G is inserted in and embraced by the walls of an aperture, h, at one end of the feed-bar H. This feed-bar slides between the usual guides, H, its outer end being supported by means of a pin, h, connecting the two outer guides, and

passing through a slot, H in the end of the feed bar. This slot is inclined," as clearly shown in Figs. 10 and 11 of the drawings, so that as the feed-bar advances it will rise gradnally until the end of its effective stroke is reached, thereby causing it to operate upon the cloth throughout the extent of its travel.

To the head-plate bat the end of the bracket-arm B is attached the casing 0, (shown in detail in Figs. 5 and 7,) which contains the needle-bar and the mechanism for operating the same. This mechanism is, in general, of the usual description, consisting of a disk, D, at the outer end of the shaft D, provided with a roller crank-pin, d, which works in the camtwo portions entering thetwoguiding-grooves c in the casing C, It is obvious that this construction wilt-leave between the two grooves c a projection, c, which enters the groove formed between the bifurcations of the end of the block wear at this point, and is therefore preferably made of steel or some other hard metal, and

in order to take up any slight wear that may occur I connect the bifurcated ends thereof by means of aclamp screw, t", by which they can be drawn together, so as to clamp them upon the projection c of the casing O.

The pivots e of the lever E are arranged, as shown, high up on the standard B, and as near the upper end of the said lever as practicable, while the pivot e of the shuttle-lever E is arranged near that end of the lever which is connected to the lever E. By thus arranging these pivots near the points of their respective levers to which the power which actuates them is applied the speed of the shuttle-carrying end of the shuttle-lever is made so great that I am enabled to impart sufficient rapidity to the movement of the shuttle to throw it through the loop of thread formed by the descent of the needle during the stroke or movement of the shuttle-carrying end of the shuttle-lever toward the rear of the machine, or, in other words, from the operator, the shuttle being arranged with its point directed toward the rear of the machine, and by reason of this result the machine is rendered capable of being run toward the operator-i. 6., the fly-wheel or hand-wheel D at the end of the main shaft D will rotate in the direction of the arrow in Fig. 4. This enables the operator to start the machine much more readily than when the machine is run in the opposite direction, since it is much easier to place the hand on top of the wheel D and draw it toward one than to force it in the opposite direction, and a much more forcible impulse can be given to the wheel to start the machine in this direction. I

By locating the pivots of the shuttle-operating mechanism in the manner hereinbefore described I am enabled to employ the feed I. This block is necessarily subjected to great parting from the principle of my invention, and I therefore do not wish to be understood as limiting myselfstrictly to the precise details shown and described. I

I am aware that heretofore a vibrating lever mounted on a universal joint has been employed to impart motion to the feed-bar, such a construction being shown in Letters Patent No. 67,752, granted August 13, 1867, to Horris W. Hadley. I am also aware of Letters Patent No. 86,164, granted January 26, 1869, to John T.! JODS, which show a cam on the main shaft and apitman provided with a square yoke to embrace the said cam. I therefore do not wish to be understood as claiming either of these constructions independently.

I am also aware of Letters PatentNo.228,S20, granted June 15, 1880, to George Juengst, which show a cam 011 the main shaft, apitman provided with a square yoke to embrace the said cam, and avibrating lever connecting the pitman and feed-bar. In this construction, however, the vibrating lever is mounted on two fulcrum bearings or points, against which it is held by a spring,and its action is not positive, .except in its upward and forward movements, the downward and backward movements being produced by the reaction of the spring.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a sewing-machine, the combination, with the main shaft and a single cam thereon for operating the feed-lever, of the feed-lever having a square yoke embracing said cam,the feed-bar, and a positively-actuated vibrating lever mounted on a universal joint and connecting the feed-bar and feed-lever, substantially as and for the purposes specified.

2. In a sewing machine, the combination, with the main shaft having asingle cam thereon to operate the feed'lever, of the feed-lever having a square yoke embracing said cam, the pivoted guide through which the feed-lever reoiprocates, the feedbar, and a positively-actuated vibrating lever mounted on a universal joint and connecting the feed-lever and feedbar, substantially as and for the purposes Specified.

3. In a sewing-machine, the combination, with the main shaft having asingle cam thereon to operate the fced-lever,of the feed-lever having a square yoke embracing said cam, the feed-bar provided with an inclined slot embracing a fixed pin, and the vibrating lever mounted on a universal joint and connecting the feed-lever and feed-bar, substantially as and for the purposes specified.

4. In a sewingmachine, the combination, with the main shaft havinga single cam thereon to operate the feed-lever, of the feed-lever having a square yoke embracing said cam, the pivoted guide through which the feed-lever reciprocates, the feed-bar provided with an inclined slot embracing the fixed pin, and the Vibrating lever mounted on a universal joint and connecting the feed-bar and feed-lever, substantially as and for the purposes specified.

5. The combination, with the shuttle-lever and its actuating-lever, the latter pivoted near its upper end and the former pivoted at a point near the connection between the two levers, of the main shaft provided with an eccentric to operate the said actuating-lever, and with asingle cam to operate the feed-lever, the feed-lever provided with a square yoke embracing said cam, the feed-bar, and a vibrat ing lever connecting the feed-lever and feedbar, substantially as and for the purposes specified.

6. The main shaft provided with the eccentric and single cam,and the sh uttlclever and its actuating-lever, the latter operated by the eccentric and pivoted near its upper end,and the former pivoted near the connection between the two levers, in combination with the feed lever havinga square yokeembracing the cam, the pivoted guide through which the l'eedlevcr reciprocatcs, the feed-bar provided with an inclined slot to receiveaguiding and supporting pin, and a vibrating lever mounted on a universal joint and connecting the feed-bar and feed-lever, substantially as and for the purposes specified.

HENRY E. DIETERLE.

\Vitnesses:

IRVINE MILLER, W. O. CORLIES. 

